7777776777373 has 2 divisors, whose sum is σ = 7777776777374. Its totient is φ = 7777776777372.

The previous prime is 7777776777371. The next prime is 7777776777383. The reversal of 7777776777373 is 3737776777777.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7124431120569 + 653345656804 = 2669163^2 + 808298^2 .

It is a cyclic number.

It is not a de Polignac number, because 7777776777373 - 2¹ = 7777776777371 is a prime.

It is a super-2 number, since 2×7777776777373² (a number of 27 digits) contains 22 as substring.

Together with 7777776777371, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7777776777371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3888888388686 + 3888888388687.

It is an arithmetic number, because the mean of its divisors is an integer number (3888888388687).

Almost surely, 2^{7777776777373} is an apocalyptic number.

It is an amenable number.

7777776777373 is a deficient number, since it is larger than the sum of its proper divisors (1).

7777776777373 is an equidigital number, since it uses as much as digits as its factorization.

7777776777373 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15253663446, while the sum is 82.

The spelling of 7777776777373 in words is "seven trillion, seven hundred seventy-seven billion, seven hundred seventy-six million, seven hundred seventy-seven thousand, three hundred seventy-three".